Wednesday, June 19, 2013
Webcam and lighting 3 in 1 setup up notes
I found it tedious to adjust the webcam and lighting positions every time. So I am thinking of placing 3 things into 1 group.
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# *****************************************************************************
# Function - TestWebcam()
# Notes -
# * BenQ 737s 17" LCD monitor native Resolution 1280 x 1024
# * C920 image size = HD1080 (1920 x 1080), HD720 (1280 x 720)
# * pygame error: No video mode large enough for 1920 x 1080
# * $ lsusb -d 046d:0825 Logitech Webcam C270
# * $ lsusb -d 046d:082d Logitech Webcam C920
# *****************************************************************************
Size640x480 = (640, 480)
Size1280x720 = (1280, 720)
Size1280x1024 = (1280, 1024) # ValueError: Destination surface not the correct width or height
Size1920x1080 = (1920, 1080) # pygame.error: No video mode large enough for 1920x1080
def TestWebcamCamera10(cameraNumber, imageSize, imageCount, timerSecond, fileName):
ftprint.PrintDoubleSpaceLine("*** Sample run begin - TestWebCamCamera08() 2013jun18hkt10:54 ***")
pygame.init()
pygame.camera.init()
webCamList = pygame.camera.list_cameras()
webCamCount = len(webCamList)
print "Number of cameras found = ", webCamCount
print "Camera used = ", cameraNumber
print "Image size = (", imageSize[0], ", ", imageSize[1], ")"
print "Number of images to get = ", imageCount
print "Time between images (in seconds) = ", timerSecond
imageSize = Size1280x720 # debug only !!!
webCamCamera = pygame.camera.Camera(webCamList[int(cameraNumber)], imageSize)
webCamCamera.start()
pygame.display.init()
webCamDisplay = pygame.display.set_mode(imageSize, 0)
webCamSurface = pygame.surface.Surface(imageSize, 0, webCamDisplay)
for count in range(imageCount):
for event in pygame.event.get(): # Escape key from local keyboard, NOT PuTTY!!!
if (event.type == QUIT or (event.type == KEYDOWN and event.key == K_ESCAPE)):
webCamCamera.stop()
pygame.quit()
return
if (event.type == KEYDOWN and event.key == K_x):
webCamCamera.stop()
pygame.quit()
return
if (event.type == KEYDOWN and event.key == K_s):
fullPathFileName = os.path.join('/home/pi/fongtoy/', fileName)
pygame.image.save(webCamSurface, fullPathFileName)
print "Image saved"
if webCamCamera.query_image():
webCamSurface = webCamCamera.get_image(webCamSurface)
webCamDisplay.blit(webCamSurface, (0,0))
pygame.display.flip()
time.sleep(timerSecond)
print "Image number = ", count
pygame.image.save(webCamSurface, "/home/pi/fongtoy/testImage.bmp")
print "File name of last image = /home/pi/fongtoy/testImage.bmp",
ftprint.PrintDoubleSpaceLine("*** Sample run end ***")
# *** sample call ***
# ftwebcam.TestWebcamCamera09(cameraNumber = 1,
# imageSize = (1280, 720),
# imageCount = 10,
# timerSecond = 1,
# fileName = "file20130618hkt1725.bmp")
.END
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